Question

In a,two digit number,the digit at ten place it twicethe digit at unit place. the new number is obtained. by reversing the order of digit is lessthen the orignal number​

Answer 1

Answer:

Let the two digit number is xy

y is digit at unit's place

x is digit at ten's place

⇒ Number can be written as = 10x+y

According to the conditions : y=2x ___ (1)

and

(10x+y)+(10y+x)=99

⇒11x+11y=99

⇒x+y=9 (dividing by 11)

Now x+2x=9 (from (1))

⇒3x=9

⇒x=9/3=3

y=2x=6

⇒ Number is 36

Step-by-step explanation:

I hope this helps you dear